Epidemiological differences in levels of depressive signs among nocturnal symptoms of insomnia; results from the HUNT study

Table 2 Pairwise comparison of mean HADS-D for each combination of symptoms

Pairwise comparison		Mean difference	95% CI	p-value *
Onset	Maintenance	0.5	[0.1 to 1]	0.009
	Terminal	− 0.2	[− 0.8 to 0.4]	1.000
	Onset + Maintenance	−0.6	[−1.2 to − 0.1]	0.007
	Maintenance + Terminal	− 0.3	[− 0.9 to 0.2]	1.000
	Onset + Terminal	− 1.1	[− 2.1 to − 0.1]	0.030
	Onset + Maintenance + Terminal	− 1.3	[− 1.8 to − 0.8]	< 0.001
Maintenance	Terminal	− 0.7	[− 1.2 to − 0.2]	0.001
	Onset + Maintenance	− 1.2	[− 1.7 to − 0.7]	< 0.001
	Maintenance + Terminal	− 0.9	[− 1.4 to − 0.4]	< 0.001
	Onset + Terminal	− 1.6	[− 2.6 to − 0.6]	< 0.001
	Onset + Maintenance + Terminal	− 1.8	[− 2.2 to − 1.3]	< 0.001
Terminal	Onset + Maintenance	− 0.5	[− 1.1 to 0.2]	0.469
	Maintenance + Terminal	− 0.2	[− 0.8 to 0.4]	1.000
	Onset + Terminal	− 0.9	[− 2 to 0.2]	0.228
	Onset + Maintenance + Terminal	− 1.1	[− 1.7 to − 0.5]	< 0.001
Onset + Maintenance	Maintenance + Terminal	0.3	[− 0.3 to 0.9]	1.000
	Onset + Terminal	−0.4	[− 1.5 to 0.6]	1.000
	Onset + Maintenance + Terminal	− 0.6	[− 1.2 to − 0.1]	0.018
Maintenance + Terminal	Onset + Terminal	−0.7	[− 1.8 to 0.3]	0.718
Maintenance + Terminal	Onset + Maintenance + Terminal	− 0.9	[− 1.5 to − 0.4]	< 0.001
Onset + Terminal	Onset + Maintenance + Terminal	−0.2	[− 1.2 to 0.9]	1.000

*Bonferroni corrected for 21 comparisons
N.B.: Differences in mean values can be considered as effect measure for the pairwise comparisons (Baguley, 2009)

ISSN: 2398-2683